Hydrophobic, structural and optical properties of zinc silica thin films

A fundamental study was conducted to investigate the hydrophobic properties, structural characteristics, surface morphology and topology, and luminescence properties of the zinc silica thin films due to various ZnO content. Hydrophobically zinc silica thin films, xZnO-(1-x)SiO2 with 0 < x < 20...

Full description

Saved in:

Bibliographic Details
Main Author:	Aziz, Nur Aimi Syaqilah
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/47933/25/NurAimiSyaqilahMFS2013.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.47933
record_format	uketd_dc
spelling	my-utm-ep.479332017-07-18T06:44:31Z Hydrophobic, structural and optical properties of zinc silica thin films 2013-05 Aziz, Nur Aimi Syaqilah QC Physics A fundamental study was conducted to investigate the hydrophobic properties, structural characteristics, surface morphology and topology, and luminescence properties of the zinc silica thin films due to various ZnO content. Hydrophobically zinc silica thin films, xZnO-(1-x)SiO2 with 0 < x < 20 wt%, have been prepared using a low temperature sol-gel process and dip coating technique. The hydrophobic properties were determined using contact angle measurement which gave the static water contact angle of 102 ± 1° for 20 wt% of ZnO. The structural characteristics were investigated using Infrared (IR) Spectroscopy in the range of 400 – 4000 cm-1. The peaks observed on the spectra showed the C-H, C-H3, Si-O-Si, Si-O-Zn and Zn-O bonding. The changes in morphology and topology were characterized by Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). The surface roughness of the hydrophobic coatings showed a maximum value of 148.32 nm while the maximum size of the pores was found to be 6.47 µm. The optical absorption and photoluminescence properties were studied by means of UV-Visible optical absorption and Photoluminescence (PL) spectroscopy. All samples exhibited more than 90 % optical transmittance which indicated a higher transparency of the films. The emission spectra showed broad and sharp peaks of luminescence at 390, 420, 550 and 740 nm corresponding to the characteristic of Zn2+ due to transitions of 2S1/2?2D5/2, 2S1/2?2D3/2, 2D3/2?2P°3/2 and 2D5/2?2P°3/2, respectively. The thin films prepared in this work have shown to be promising materials for use in hydrophobic and water-resistant applications. 2013-05 Thesis http://eprints.utm.my/id/eprint/47933/ http://eprints.utm.my/id/eprint/47933/25/NurAimiSyaqilahMFS2013.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Aziz, Nur Aimi Syaqilah Hydrophobic, structural and optical properties of zinc silica thin films
description	A fundamental study was conducted to investigate the hydrophobic properties, structural characteristics, surface morphology and topology, and luminescence properties of the zinc silica thin films due to various ZnO content. Hydrophobically zinc silica thin films, xZnO-(1-x)SiO2 with 0 < x < 20 wt%, have been prepared using a low temperature sol-gel process and dip coating technique. The hydrophobic properties were determined using contact angle measurement which gave the static water contact angle of 102 ± 1° for 20 wt% of ZnO. The structural characteristics were investigated using Infrared (IR) Spectroscopy in the range of 400 – 4000 cm-1. The peaks observed on the spectra showed the C-H, C-H3, Si-O-Si, Si-O-Zn and Zn-O bonding. The changes in morphology and topology were characterized by Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). The surface roughness of the hydrophobic coatings showed a maximum value of 148.32 nm while the maximum size of the pores was found to be 6.47 µm. The optical absorption and photoluminescence properties were studied by means of UV-Visible optical absorption and Photoluminescence (PL) spectroscopy. All samples exhibited more than 90 % optical transmittance which indicated a higher transparency of the films. The emission spectra showed broad and sharp peaks of luminescence at 390, 420, 550 and 740 nm corresponding to the characteristic of Zn2+ due to transitions of 2S1/2?2D5/2, 2S1/2?2D3/2, 2D3/2?2P°3/2 and 2D5/2?2P°3/2, respectively. The thin films prepared in this work have shown to be promising materials for use in hydrophobic and water-resistant applications.
format	Thesis
qualification_level	Master's degree
author	Aziz, Nur Aimi Syaqilah
author_facet	Aziz, Nur Aimi Syaqilah
author_sort	Aziz, Nur Aimi Syaqilah
title	Hydrophobic, structural and optical properties of zinc silica thin films
title_short	Hydrophobic, structural and optical properties of zinc silica thin films
title_full	Hydrophobic, structural and optical properties of zinc silica thin films
title_fullStr	Hydrophobic, structural and optical properties of zinc silica thin films
title_full_unstemmed	Hydrophobic, structural and optical properties of zinc silica thin films
title_sort	hydrophobic, structural and optical properties of zinc silica thin films
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2013
url	http://eprints.utm.my/id/eprint/47933/25/NurAimiSyaqilahMFS2013.pdf
_version_	1747817266965118976

Hydrophobic, structural and optical properties of zinc silica thin films

Similar Items